Leveling attachment for elevator-car switches



2 1927. Jan 5 J. D. SCHAKEL LEVELING'ATTACHMENT FOR ELEVATOR CARSWITCHES Filed Sept 12, 1924 3 Sheets-Sheet 1 I Jan. 25, 1927.

J. D. SCHAKEL LEVELING ATTACHMENT FOR ELEVATOR CAR SWITCHES Filed Sept.12, 1924 3 Sheets-Sheet 2 f 1 0 Jag c a/ 1 dill!!! II! vi! villi/IlaPatented Jan. 25, 1927.

UNITED STATES 1 PATENT OFFICE.

JACOB D. SCHAKEL, OF CHICAGO, ILLINOIS, ASSIGNORTOi ELEVATOR'COMPANY OFAMERICA, OF CHICAGO, ILLINOIS. A CORPORATION OF ILLINOIS.

LEVELING ATTACHMENT FOR ELEVATOR-CAR SJN I'ICI'IES.

Application filed September .12, 1924.

My invention relates to switches, and more partlcularly to a levelingattachment :ior elevator car switches.

It is a purpose of my invention to provide a switching device for use incontrolling the movements of a body that moves in a fixed path such asan elevator moving up and down in a shaft. In certain cases it is verydesirable to have the moving body such as the elevator remain at apredetermined point or station for an extended period of time and toalso cause said body to stop precisely at said station when a stop is tobe made thereat. This is particularly desirable in the case of elevatorsthat are used for the purpose of hauling freight, where a wheeledvehicle is to be moved from a fixed level such as a floor on to a movingplatform such as an elevator or off the elevator platform on to thefloor. In such cases it is very desirable that the elevator and thefloor lie in the same plane or that the elevator is exactly level withthe floor.

It is a purpose of my invention to provide new and improved meansassociated with a moving body such as an elevator for accomplishing thispurpose whereby substantially no changes are necessary in the equipmentof the elevator and the leveling device is merely in the form of anattachment to the previously provided mechanism. Electric elevators areordinarily operated by a switch lneclianism in the car that is to beactuated.

manually by the operator to cause the car to move in either direction orto stop as desired. The mechanism in the car is ordinarily known as acar switch and is associated with certain controlling devices that arelocated at a remote point from the car, but near the motor for operatingthe same so that actuation of the car switch will cause operation of thecontrolling means in aproper manncr to move the car in the desireddirection or to automatically stop the car when the power is shut off.The standard devices for this purpose are not involved in thepresentinvention and are not altered in anyway in carrying out thepurpose of this invention.

Serial No; 737,364.

It is a purpose of my invention to provide suitable switch closingmechanism that is actuated by the-movement of the car or other movingcontact members co-operating with said stationary contacts, certain ofsaid stationary contacts controlling the movement of the car or body'inone direction and the other of said contacts controlling the movement ofthe body or car inthe opposite direction.

It is still a further purpose of the inven tion toprovide a device ofthe above mentioned character in which one of said movable contactmembers is manually operable and the other of which is mechanicallyoperable independently of said manually operable means.

It isstill another purpose of the inven tion to provide a mechanicallyoperated movable contact member operating means controlled by themovement of the car or body. The contacts of the switching device areconnected up with suitable contacts on a standard controller and thecontroller is provided with suitable mechanism whereby it is impossiblefor the manually operated switching member and the mechanically operatedswitching member to close two circuits for operating the .motor inopposite directions, this being a standard construction which iswell-known in the art and which is not involved in the presentinvention.

In the embodimentof the invention shown in the drawings, the car switchcomprises stationary contact members having contact portions mounted .onthe opposite sides of anjinsiulating base or support with a movablecontact 5, member mounted, on one sideof said support co-operating withthe contact portions on that side of said support and a movable contactmember mounted on the other side of said support, the contact poritionsopposite each other being electrically connected together. The manuallyoperable movable contact member is operated by a handle mounted on ashaft that rotates or turns with the movable contact member that ismanually operated. The mechanically operated movable contact member isfreely rotatable on said shaft and is operated by means of a lever, themovement of which in one direction moves the movable contact member inthe direction to close a circuit for movingthe body in one direction andthe movement thereof in the opposite direction moves the movable contactmember into a position to close the circuit for moving the body or carin the opposite direction.

The lever is provided with a pair of rollers, one of which co-operateswith a cam so mounted in the path of movement of the car or othermovable body that when said roller engages therewith, the lover is movedin the direction toward the station or floor level with which it isdesired to align the movable body or car and the other of whichco-operates with a cam on the opposite side of the station or floorlevel referred to for moving the lever in such direction as to causemovement of the car in the opposite direction to that when the firstmentioned roller engages with its cam or also toward the station oriioor level.

It is still a further purpose of the invention to provide means formaintaining the movable contact member that is mechanically operated orcontrolled by the position of the car normally in an open circuitpoition, said means also maintaining the lever carrying the rollers in acentral position.

Other objects and advantages of the invention will appear as thedescription ot the accompanying drawings proceeds. However, I desire tohave it distinctly understood that I do not intend to limit myself tothe details shown or described, bllk; that I intend to include as partof my invention all such obvious changes and 1nodifications oi? parts aswould occur to a person skilled in this art and as would fall within thescope of the claims.

in the drawings:

Fig. 1 is a view 1 artly in trout elevation and partly in section myimproved switch mechanism;

Fig. 2 is a view partly in side elevation and partly in transversesection of said switch mechanism. portions thereof being lilOl-lel'laway. the manuall operable switch n'iechanism being shown principally insection, the section thereof being taken on line 22 of Fig. 1 and themechanically operatcd switch mechanism being shown principally inelevation;

Fig. 3 is a lace view of my improved car switch with a portion of thecover broken away;

Fig. 4c is a fragmentary front elevational view of the movable contactoperating lever and parts associated therewith; and

Fig. 5 is a fragmentary sectional view taken substantially on the line55 of Fig. 1.

Referring in detail to the drawings, my improved switch mechanism isshown as being: mounted on a suitable support which may be a portion ofan elevator car, said switch mechanism comprises a casing 11 which isprovided with a cover 12 that is removable therefrom. The casing 11 isprovided with a bearing portion 13 for a shalt 1-1 that projectsrearwardly through said -asing as will be clear from Fig. 2. The shaft1-lis provided with an enlarged or thickened square portion 15 that hasa socket portion 16 provided in the end thereof into which the bearingstud 17 on the cover 12 projects.

Mounted in fixed position within the casing' 11 is a plate of insulatingmaterial 18 upon which is mounted a plurality of contacts having thecontact portions 20, 21, and on one side of said insulating plate orsupport 18 and the contact portions E21, 25, and 20 on the other side01' said plate or support 8. Suitable conducting securing menmers suchas the bolts 2? connect the members on the opposite sides of theinsulating member 18 in pairs. that is, the contact portion 20 isconnected with the contact portion 21 so as to form what is in el'l'ecta single contact and in a similar manner the contact portions 21 and 25,and Q" and 26 are connected together on opposite sides of the insulatingl'lSG member 18 so that each pair of said contact portions is in ctt'ecta single contact member. Blocks of insulating material 19 and 523 arealso provided. said members 19 and 23 being counectcd together by bolts2'? and spacing sleeves 28 are provided between the members 19 and andthe plate 18 to space the same theretrom. The contacts 20, Q1, Q l, Q7),and 2-3 lie dircctl against the insulating base member 18, the member 20being; provided with. an arcuate l'lan g c 53 the member 21 with anarcuate flange ll). the

member will an arcuale flange .3 the member with an arcuate flange 322.the member \\'lill an arcuate. flange Ill} and thereof being providedwith a clamping member 36 adapted to engage with the squared ortion 15of the shaft, an insulatingbushmg 37 being provided between saidclamping portion 36 and the shaft portion 15. Suitable clamping members38 pass through the clamping portions 36 to clamp the member tightly onthe shaft 14. The member 35 is provided on one arm thereof with a socketportion 39 within which is seated a contact member 40 in the form of ablock of conducting material such as carbon, which is projectedoutwardly by means of the coil spring 41 so that the member 40 will bearagainst the block 19 and against the flanges 29 and 30 of the contacts20 and 21 as the shaft 14 is turned. The other half of the member 35 isprovided with a double socket member 42 having a pair of bores forreceiving the contact members 43 of suitable conducting material such ascarbon which are projected outwardly by means of the coil springs 44seated in the bores in the. member 42. Said members 43 are held inengagement with the arcuate flange 31. of the member 22 by the action ofthe coil springs 44.

In order to provide for the ready replacement of the contact members,the socket portions of the member 35 are provided with removable covermembers 45 and 46 which are held respectively in position by means ofthe screws 47 and 48.

The block 19 is a dead contact. butthe contacts 20, 21 and 22 areconnected with suitable terminals on a standard controller so that whenthe contact member 35 bridges the contacts 20 and 22, the elevator willbe moved in one direction and when the contact member 35 bridges thecontacts 21 and 22, the elevator will be moved in the oppositedirection.

The contacts 113 are also provided and when the contact member 43 at theright of Fig. 3 engages with the contact 113 at the right thereof, thecontacts 20 and 1.13 are bridged by the contact member to operate theelevator at a higher speed than when the contacts 20 and 22 are bridged.As there are no resistances in series with the contacts 113, and due tothe fact that the other contact 43 is in engagement with the contactmember 22 which has resistances in series therewith on the controller,the current will. flow through the contact 43 that is in engagement withthe contact 113. In a similar manner, if the movable contact member ismoved to such position that the contact member 43 at the left of Fi 3engageswith the contact 113 at the left 0 Fig. 3, the contacts 21 and113 will be bridgedby the member 35 and the elevator will be operated athigh, speed in the direction opposite to that when the contacts 20 and113 .are bridged by the member 35.

On the opposite side of the insulating member 18 from the movablecontact 35, is a movable contact member 49, said movable contact member49 is provided with a hub portion 50 that is freely rotatably mounted onthe shaft 14. The member 49 is provided with removable cap portions 51on opposite ends thereof which are held in place by means of the bolts52 and which are provided with hollow bosses 53 within which areslidably mounted the contact members 54 which are each made of a blockof carbon or similar conducting material, said members being projectedoutwardly by means of the coil springs 55 mounted in the bores 53. Thecontact members 54 engage with the dead contact 23 and with the flanges32 and 33 on the live contacts 24 and 25 and with a flange 34 on thelive contact 26.

The caps 51 are insulated from the member 49 by means of the sheet ofinsulating material 56 and the flanged insulating sleeves 120 aremounted in the openings in the ears 121 that receive the bolts 52 andunder the heads 122 of said bolts. The conductor 1.43

connects the caps 51 preferably being held clamped under the nutsmounted on certain of the bolts 52 provided on said members 51 as willbe clear from Fig. 1.

The shaft 14 is actuated by means of the handle 57 which is connectedwith the lever 58 by means of a shaft 59 and which carries the finger 60that is adapted to engage between a pair of stops 61 when the lever 58is in a central position to retain the same in such position.

A coil spring 115 is mounted on a lug 116 on the handle 58 and urges themember 60 toward the casing 11, the member 60 being pivoted at 117 asshown in Fig. 2. A collar 118 is slid'ably mounted on the shaft 59 andengages with the end 119 of the finger 60 which also is slidably mountedon the shaft 59.

The lever 58 is provided with a hub portion 62 which is secured to theshaft 14 so as to turntherewith. Accordingly, by actuation of the sleeve118 by moving the same toward the lever 58 and then swinging the lever58 either to the right or left, the finger 60 is moved out from betweenthe stops 61 and the shaft 14 will be rotated to either bridge the gapbetween the contacts 20 and 22 or the contacts 21 and 22.

Mounted on the member 49 spaced from the shaft 14 is a pivot pin 63 towhich pivotally secured the link 64, the other end of which is pivotallymounted on the pivot pin 65 which is mounted between the bifurcations 66provided on the end of the lever 67 which is keyed on a shaft 68 thatextends through a bearing 69 provided on a lateral. extension 7 O of thecasing 11. Suit-able co]- lars 71 and 72 are provided on opposite sidesof the bearing 69 so as to hold the shaft 68 from axial movement in saidhearing. The shaft 68 also has keyed thereon a lever 73 which ispivotally mounted on a pivot pin T l; which is mounted in thebifurcation provided on the member 76 which mount ed on the end of thelink 77. The link 77 is provided on the opposite end thereof with abearing member 78 having pivot ears 79 through which extends the pivotpin 80 for pivot-all connecting the end of the lever 81 thereto. Thelever 81 is pivotally mounted on a pivot pin 82 provided on the bracket-83 which is mounted on a suitable support 8 1- provided on the movingbody such the elevator upon which the switching mechanism is mounted andthe movement of which the switching mechanism controls.

The lever 81 is provided with a pair of arms 85 and 86 upon which aremounted the rollers 87 and 88. The roller 87. it will he noted. extendson one side of the arm 85 and the roller 88 extends on the opposite sideof the arm 80. said rollers being mounted to rotate respectivelv on theshafts 89 and 90. The roller 8? is adapted to co-operate with a cam 91and the roller 88 with the cam 92, said cams being out of alignment aswill be clear from Fig. 5. The earns 91 and 92 are mounted in the pathof movement of the movable body uch as the elevator and are shown in thedrawings as being mounted on a suitable support 93 such as a portion ofthe elevator shaft beingadjustablv mounted thereon by means of the bolts9i extending through the slots 9:") and having their heads seated inrecesses 96 in aid members 91 and 92. Upon reference to Fig. 1, it willbe seen that when the roller ST engages with the bevelled face 97 of thecam 91 and rides upon the flat face 98 thereof, the lever 81 will beswung: clockwise on the pivot- 82. the rod or link 77 will be moveddownwardly and the links 73 and 6? being keyed to the shaft 68 will actas a bell crank lever. the pivot being turned counter-clockwise with theshaft 68 thus moving; the end of the link 64 pivoted on the pin 63 tothe left in Fig. 1 and cansing the contact member 49 to bridge thecontacts 25 and 26.

In a similar manner, when the roller 88 rides up the inclined face 99 ofthe cam 92 and along the face 100 of said cam, the lever 81 will hemoved in a counter-clockwise direction about the pivot 82, the link 77will be moved upwardly swinging the lever comprising the ineinl'icrs T3and 07 in a clockwise direction. pulling on the link 0 tso a, to morethe end thereof connected with the pivot pin 02 to the right andcausii'ur the contact member 19 to bridge the contacts 2st and 26. Thisaction will occur no matter from what direction the i'novable hodv suchas an elevator is approaching the cams 91 and 92. For example. inconnection with the cam 92, the roller 88 will. if the elevator is belowthe cam 92, engage with the inclined face 101 of the cam 92 riding upthe same and. then along the face 100 throwing the lever 81 again in acounterclockwise direction and moving the movable contact 19 intoengagement with the contacts 24 and 26.

lVhen the parts are in the position shown in Fig. 1 in full lines,neither the roller 87 will engage with the cam 91 nor the roller 88 withthe cam 92 and the parts will be held in a central position due to theaction of the coil spring 102 which is a tension spring and which issecured at opposite ends to the pins 103 and 10d provided on the shoes105 and 106 pivoted on the pivot member The shoes are shown as beingarcuate in shape and each is adapted to enn no with a stop on thebracket 83, the shoe 105 being provided with a flange portion 10?engaging with the step 108 on the bracket 83 and the shoe 105 being;'provided with a flange portion 109 engaging with a stop on the bracket83. Upon reference to Fig. a. it will be seen that when the roller 87rides up on the cam 91 and the lever 81 thrown to an angular positionwith the end secured to the link '77 depressed below it normal position,the flange 109 will be engaged by the lever 81 moving the shoe 100downwardlv about the pivot 82 and extending the spring- 102. the flange107 engaging with the stop 108 to prevent movement of the shoe 105 withthe shoe 106. Due to the tens-:ioning of the spring, when the roller 87leaves the cam 91. the parts will be restored to the position shown infull lines in Fig. 1.

In a similar manner, when the roller 88 engages with the cam the shoe105 will he moved upwardly while the shoe 106 will be held from upwardmovement due to engagement of the flange 109 with the stop 110 and thespring 102 will be tensioned so as to again restore the parts to acentral position when the roller 88 leaves the cam 92. It is obviousthat the spring 102 due to its centering; of the lever 81 also holds theeont acts 54 normally in engagement with the contacts 23 and 20 or inthe position shown in full in Fig. 1. The lever 58 for actuating thecontact member is also normally held in an upright or central positionby means of the weights 111 that are positioned on opposite sides of theextension 112 on the hub (32. thus tending to always return the lever toits open circuit position by the action of gravity.

The downward movement of the weights is limited by the stop flange 114on the casing and it will be evident that upon actuation of the leverone of said weights lifted. with the lever while the other is left inengagemei'it with the flange 114-. thus the weight turns the lever whenthe handle is released and moves the same until the veight strikes theflange 114 when the lever is in central position with the movablecontact member 35 in open circuit position.

It will be obvious that the cams 91 and 92 can be so located thatneither the roller 87 nor the roller 88 will be in engagement with thecams when the floor of theelevator car is in alignment with the floor ofthe building near which the cams 91 and 92 are located. ltwill also beevident from Fig. 1 that a very slight movement oi the elevatorcar willcause either the roller 87 or the roller 88 to engage with the cam 91 orthe cam 92, the parts being shown in, a dotted line position in Fig. 1when the roller 87 engages with the cam 91.

It will also be obvious that the amount of movement necessary to causethe actuation of the lever in either direction can be adjusted byadjusting the cams 91 and 92 by means of the bolt and slot connectionbetween the same and the support 93. The contacts 25 and 21 are thecontacts that together with the contacts 26 and 22, control the movementof the elevator car in a downward direction, accordingly, if thecontroller handle 57 is moved to the right in Fig.

3, the car will travel downwardly orwhcn the roller 87 engages with thecam 91, the car will travel downwardly, thus any movement of the carupwardly out of its posi tion. level with a floor due to a decrease inthe load on the elevator or any other cause will bring about theengagement of the cam 91 with the roller 87, closing the switch formoving the car downwardly through engagement of the contact 4-9 with thecontact 25 bridging the contacts 25 and 26 and this movement willcontinue until the roller 87 leaves the cam 91 when the contact 49 willbe restored to a central or open circuit position by means of the spring102. Should the car move downwardly from its position level with thefloor, the roller 88 will engage with the cam 92 and the contacts 24Land 26 will be bridged by the member 49 causing movement of the car inan upward direction, the contacts 24 and 20 being the contacts forcontrolling the 'movement of the car upwardly. The movement of the lever58 to the left obviously will also cause an upward movement of theelevator car.

Due to the arrangement of the-standard controller used with the earswitch mechanism described above, it is immaterial that the rollers 87and 88 will engage with the earns 91 and 92 as the elevator car passesfloors at which no stop is to be made as the fact that the operator isholding the controller handle in such a position as to bridge either thecontacts 20 and 22 or 113 or the contacts 21 and 22 or 113 willcause'the car to continue in the direction of movement in which it isproceeding due to theoperators handle of the car switch being held insuch position and the means on the controller i'or preventing twocircuits controlling the operation of the motor in opposite directionsfrom being closed at the same time will prevent any interference by themechanically operative movable contact memher with the operation of thecar by means of the regulation handle. Should the handle, however, bethrown to a central position when either the roller 87 or 88 isopposite. its cam at a certain floor, the mechanically or car controlledmovable contact member will be immediately thrown to such a position bythe roller engagingwith the cam, that the elevator car will be moved toward thelanding or floor at which the cams are located, causing the carto travel until it reaches a level with said floor when the current willbe cut oil by the mechanism being thrown to a central position due tothe spring 102.

Having thus described my invention, What I desire to claim and secure byUnited States Letters Patent is:

1. In an elevator control .n'ieclianism the combination with a car, ofmeans for controlling the movement of said body comprising a switchhaving a manually movable contact member and an independently movablecontact member controlled in its? movement by the n'iovei'ncntot saidbody.

2. In an elevator control mechanism the combination with a car, of meansfor controlling the movement of said car comprising a switch havingstationary contacts and a pair 01' movable contacts co-operatingtherewith, one of said movable contacts being manually operated and theother movable contact being automatically operated by the movement ofsaid car in either upward or downward direction.

3. In an elevator control mechanism the combination with a car, of meansfor controlling the movement of said car comprising a switch havingstationary contacts and a pair of movable contacts co-operatingtherewith one of said movable contacts being manually operated and theother movable contact being automatically operated by the movement ofsaid car, independently of said manually operated contact.

4:. The combination with acar body movable in an elevator shaft, ofmeans for controlling the movement of said body comprising a switchhaving contacts controllingthe movement of said body in one direction,contacts controlling the movement of said body in theopposite direction,a manually mov-' able contact member adapted to close the circuitthrough either of said contacts and a movable contact, the position ofwhich is controlled by the position of said movable body along saidshaft adapted to close the circuit through either of said contacts.

5. The combination with a car body movable in an elevator shaft, ofmeans for controlling the movement of said body comprising a switchhaving oppositely arranged contacts controlling the movement of saidbody in one direction, oppositely arranged contacts controlling themovement of said body in the opposite direction, a manually movablecontact member adapted to close the circuit through either of saidoppositely arranged contacts and a movable contact, the position ofwhich is controlled by the position of said movable body along saidshaft adapted to close the circuit through either of said oppositelyarranged contacts.

6. The combination with a car body movable in an elevator shaft, ofmeans for controlling the movement of said body comprising a switchhaving oppositely arranged contacts controlling the movement of saidbody in one direction, oppositely arranged contacts controlling themovement of said bot y in the opposite direction, a manually movablecontact member adapted to close the circuit through either of saidoppositely arranged contacts and a movable contact, the position ofwhich is controlled by the position of said movable body along saidshaft adapted to close the circuit through either of said oppositelyarranged contacts, either of said movable contacts being movableindependently of the other.

7. The combination with a car body movable in an elevator shaft past alanding station, of means for controlling the movement of said bodycomprising contacts controlling the movement of said body in oppositedirections, a pair of movable contact 1nembers, means for manuallymoving one of said movable contact members into circuit closing relationto said contacts and means for moving the other of said movable contactmembers into circuit closing relation to said first contacts controlledby the position of said body relative to said station.

8. The combination with a car body movable in an elevator shaft past alanding station, of means for controlling the movement of said bodycomprising contacts controlling the movement of said body in oppositedirections, a pair of movable contact members, means for manually movingone of said movable contact members into circuit closing relation tosaid contacts and means for moving the other of said movable contactmembers into circuit closing relation to said first contacts controlledby the position of said body relative to said station, said meanscomprising a member for moving said movable contact member into circuitclosing relation to the contacts controlling the movement of the body inone direction and a member for moving said movable contact member intocircuit closing relation to the contacts controlling the movement of thebody in the opposite direction.

9. The combination with a car body movable in an elevator shaft past alanding station, of means for controlling the movement of said bodycomprising contacts controlling the movement of said body in oppositedirections, a pair of movable contact members, means for manually movingone of said movable contact members into circuit closing relation tosaid contacts and means for moving the other of said movable contactmembers into circuit closing relation to said first contacts controlledby the position of said body relative to said station, said means beingso mounted that said last mentioned movable contact member is in opencircuit position when said body is in alignment with said station.

10. The combination with a car body movable in an elevator shaft past alanding station, of means for controlling the movement of said bOC ycomprising contacts controlling the movement of said body in oppositedirections, a pair of movable contact members, means for manually movingone of said movable Contact members into circuit closing relation tosaid contacts and means for moving the other of said movable contactmembers into circuit closing relation to said first contacts controlledby the position of said body relative to said station, said meanscomprising a member for moving said movable contact member into circuitclosing relation to the contacts controlling the movement of the body inone direction and a member for moving said movable contact member intocircuit closing relation to the contacts controlling the movement of thebody in the opposite direction, said members being spaced apartvertically along said shaft so that neither of said members actuatessaid last mentioned movable contact member when said body is inalignment with said station.

11. A device of the character described. comprising a rotatable shaft,an insulating support, stationary contact members on said supportcomprising portions on opposite sides of said support, means forrotating said shaft, a movable contact member cooperating with thestationary contact portions on one side of said support mounted on saidshaft to rotate therewith, a contact member co-operating with thestationary cont-act portions on the opposite side of said support freelyrotatably mounted on said shaftand means for moving said last meirtioned contact member comprising a lever connected therewith, rollersthereon, and a pair of cams with which said rollers engage to move saidlever in opposite directions.

12. A device of the character described comprising a rotatable shaft, aninsulating support, stationary contact members on said supportcomprising portions on opposite sides of said support, means forrotating said shaft, a movable contact member cooperating with thestationary contact portions on one side of said support mounted on saidshaft to rotate therewith, a contact member co-operating with thestationary contact portions on the opposite side of said support freelyrotatably mounted on said shaft and means for movin said last mentionedcontact member comprising a lever connected therewith, rollers thereon,a pair of cams with which said rollers engage to move said lever inopposite directions, and means for restoring said lever to a centralposition.

13. The combination with a car body mo vable in an elevator shaft past alanding station, of means for controlling the movement of said bodycomprising a switch having a pair of movable contact members, saidmembers each having means for normally holding the same in an opencircuit position and being movable in opposite directions therefrom toclose the circuits controlling movement of said body in oppositedirections, one of said movable contact members being n'ianuallyoperated and. the other of said members being connected with a lever;rollers on said lever, a cam engaging with one of said rollers to movesaid lever in one direction and another cam engaging with the otherroller to move said lever in the opposite direction.

14. The combination with a car body movable in an elevator shaft past alanding station, of means for controlling the movement of said bodycomprising a switch having a pair of movable contact members, saidmembers each having means for normally holding the same in an opencircuit position and being movable in opposite directions therefrom toclose the circuit controlling movement of said body in oppositedirections, one of said movable contact members being manually operatedand the other of said members being connected with a lever; rollers onsaid lever, a cam engaging with one of said rollers to move said leverin one direction and another cam engaging with the other roller to movesaid lever in the opposite direction, said cams being located in saidshaft near said station.

15. The combination with a body movable in a predetermined path past astation, of

means for controlling the movement of said body comprising a switchhaving a pair of movable contact members, said members each having meansfor normally holding the same in an open circuit position and being moable in opposite directions therefrom to close the circuit controllingmovement of said body in opposite directions, one of said movablecontact members being manually operated and the other of said membersbeing connected with a lever; rollers on said lever, a cam engaging withone of said rollcrs to move said lever in one direction and another camengaging with the other roller to move said lever in the oppositedirection, said cams being located in said path near said station,neither of said cams engaging with said rollers when said body isaligned. with said station.

16. The combination with a body movable in a predetermined path past astation, of means for controlling the movement of said body comprising aswitch having a pair of movable contact members said members each havingmeans for normally holding the same in any open circuit position and being movable in opposite directions therefrom to close the circuitcontrolling movement of said body in opposite directions, one off saidmovable contact members being manually operated and the other of saidmembers being connected with a lever, a cam engaging with one of saidrollers to move said lever in one direction and another cam engagingwith the other roller to move said lever in the opposite direction, saidcams be ing located in said path near said station. and the engagementof either roller with its cam moving said lever in a direction to closethe circuit controlling movement of the body toward the station.

17. An elevator leveling mechanism comprising, in combination a car, amotor for raising and lowering the same, manually operable means on thecar for controlling the operation of? said raising and lowering motorand control means for said motor automatically becoming operative whenthe manually operable means breaks the energizin circuit of the motor asthe car approaches a landing to cause said motor to raise or lower thecar until it is level with the landing.

18. An elevator leveling mechanism comprising, in combination a car, amotor for raising and lowering the same, manually operable means on thecar for controlling the operation of said raising and lowering motor andcontrol means on said car automatr cally becoming operative when themanually operable means breaks the energizing circult of the motor asthe car approaches a landing to cause said motor to raise or lower thecar until it is level with the landing.

19. An elevator leveling mechanism comprising in combination a car, amotor for raising and lowering the same, manually operable means on theear for controlling the operation of said raising and lowering motor,control means on said car automatically becoming operative when themanually operable means breaks the energizing circuit of the motor asthe car approaches a landing, to cause said motor to raise or lower thecar until it is level with the landing, and cam means adjacent thelandings for rendering said second control means operative.

20. In a leveling device for electric el vators comprising a car, motormeans for raising and lowering the car, a switch on said car forcontrolling the motor, said switch having a hand control lever a secondlever for operating said switch, and means for operating said secondlever comprising an arm connected thereto and pivoted on the car andhaving cam engaging means thereon and cam members on the Wall of theelevator well adapted to be engaged by said cam engaging means as thecar passes, to

cause said second lever to ope ate the switch and cause the motor tolevel the car at a landing when the hand control lever is moved intoinoperative position.

In witness whereof, I hereunto snliiscrihe n y name this 3rd day ofSeptemher, A. l).

JACOB D. SCHAKEL.

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